CN105866046A - Rotary light filter monochromator based greenhouse gas analyzer - Google Patents
Rotary light filter monochromator based greenhouse gas analyzer Download PDFInfo
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- CN105866046A CN105866046A CN201610355782.XA CN201610355782A CN105866046A CN 105866046 A CN105866046 A CN 105866046A CN 201610355782 A CN201610355782 A CN 201610355782A CN 105866046 A CN105866046 A CN 105866046A
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- optical system
- monochromator
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- principal reflection
- rear optical
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- 239000005431 greenhouse gas Substances 0.000 title claims abstract description 22
- 230000003287 optical effect Effects 0.000 claims abstract description 37
- 238000001914 filtration Methods 0.000 claims description 17
- 239000011888 foil Substances 0.000 claims description 5
- 238000004581 coalescence Methods 0.000 claims description 2
- 230000003595 spectral effect Effects 0.000 abstract description 21
- 230000004907 flux Effects 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/12—Generating the spectrum; Monochromators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/2803—Investigating the spectrum using photoelectric array detector
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/12—Generating the spectrum; Monochromators
- G01J2003/1213—Filters in general, e.g. dichroic, band
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The invention discloses a rotary light filter monochromator based greenhouse gas analyzer which comprises a front optical system, a monochromator, a rear optical system, a signal receiving and processing system and a displayer, wherein the monochromator is arranged between the front optical system and the rear optical system, the front optical system consists of a main reflecting mirror and an auxiliary reflecting mirror, an opening is formed in the middle of the main reflecting mirror, and a focal point of the main reflecting mirror coincides with the focal point position of the auxiliary reflecting mirror. The rear optical system consists of four groups of lenses, and the lenses are arranged on a certain channel of the corresponding monochromator. The signal receiving and processing system consists of CCD detectors and a signal processor, wherein the receiving faces of the CCD detectors are located at the focal plane position of the rear optical system, and the CCD detectors are connected with the displayer through the signal processor. The rotary light filter monochromator based greenhouse gas analyzer has the advantages that the greenhouse gas analyzer is high in resolution ratio, large in luminous flux and wide in spectral range and application channels can be flexibly increased or decreased, has high comprehensive performance and can be widely applied to analysis and measurement of a variety of greenhouse gases.
Description
Technical field
The present invention relates to optical instrument field, a kind of greenhouse gases analyser based on rotating filtering sheet monochromator.
Background technology
Steam, carbon dioxide, methane etc. are greenhouse gases main in air, and the detection and quantification for atmospheric greenhouse gas resolves the spectral instrument needing to have higher spectrally resolved ability.Monochromator is the core devices of such spectral instrument, is used for extracting the spectral information of greenhouse gases, in order to obtain the information needed.Different according to monochromator used, spectral instrument mainly has following several.
Prism-grating-prism (PGP) type spectral instrument uses the combination of common prism and diffraction grating to reach light splitting purpose, compensate for prism and grating to a certain extent separately as Spectral line bend during beam splitter, the integrally-built of instrument is conducive to debug, its dispersion is mainly based on grating therein, there is wider spectral measurement ranges and higher spectral resolution, but owing to being limited by grating slit size, the method is difficult to obtain higher luminous flux, and signal to noise ratio is relatively low.
Fourier transformation type spectral instrument utilizes interferometer principle to carry out light splitting, by the interferogram of detection pixel radiation, and utilizes computer that interferogram is carried out Fourier transformation process, it is thus achieved that the spectral distribution of pixel.This method has higher spectral resolution, higher luminous flux, higher signal to noise ratio, but is constrained to optical path difference change interval and is difficult to the least, and the method is mainly used in infrared spectrum wave band.
Current spectral instrument is difficult to take into account the characteristics such as spectral resolution, luminous flux, spectral measurement ranges simultaneously.Develop a kind of spectral instrument with higher comprehensive performance for greenhouse gases analysis and seem the most urgent.
Summary of the invention
Not enough in order to solve present in current spectral instrument, it is an object of the invention to provide a kind of greenhouse gases analyser based on rotating filtering sheet monochromator, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme:
A kind of greenhouse gases analyser based on rotating filtering sheet monochromator, including front optical system, monochromator, rear optical system, signal receiving processing system, display, described monochromator is arranged between front optical system and rear optical system, described front optical system is made up of principal reflection mirror and secondary mirror, the centre of described principal reflection mirror is provided with an opening, and the focus of described principal reflection mirror overlaps with the focal position of secondary mirror；
Described rear optical system is made up of four groups of lens, and often group lens are made up of some lens, and on a certain passage of the monochromator that lens are arranged on correspondence, the light of monochromator outgoing can coalescence be imaged on the focal plane of rear optical system；
Described signal receiving processing system is made up of ccd detector and signal processor, and described ccd detector receiving plane is positioned at the position of focal plane of rear optical system.
As the further scheme of the present invention: the opening size of described principal reflection mirror is more than the outgoing directional light size of secondary mirror reflection.
As the further scheme of the present invention: described signal processor is connected with ccd detector, described signal processor connects display.
As the further scheme of the present invention: described principal reflection mirror is concave surface secondary rotating paraboloidal mirror, described secondary mirror is convex surface secondary rotating paraboloidal mirror.
As the present invention further scheme: described principal reflection mirror and secondary mirror surface all scribble reflective foil layer.
Compared with prior art, the invention has the beneficial effects as follows: use rotating filtering sheet monochromator as light-splitting device, have that resolution is higher, luminous flux is higher, spectral region is wider, application passage can the advantage such as increase and decrease flexibly, combination property is high, can be widely applied to analysis and the measurement of multiple greenhouse gases.
Accompanying drawing explanation
Fig. 1 is the connection diagram of the present invention.
Fig. 2 is the structural representation of the present invention.
In figure: 1-rotating filtering sheet；8-polariser；12-principal reflection mirror, 13-secondary mirror, 14-monochromator, 15-the first battery of lens, 16-the second battery of lens, 17-the 3rd battery of lens, 18-the 4th battery of lens, 19-the first ccd detector, 20-the second ccd detector, 21-the 3rd ccd detector, 22-the 4th ccd detector.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Refer to Fig. 1～2, in the embodiment of the present invention, a kind of greenhouse gases analyser based on rotating filtering sheet monochromator, including front optical system, monochromator, rear optical system, signal receiving processing system, display, monochromator is arranged between front optical system and rear optical system.The light that target is sent by front optical system is converted into the collimated light beam of coupling monochromator bore, monochromator receives collimated light beam and carries out spectral scan, the light beam containing spectral information that monochromator is exported by rear optical system is assembled, and by target imaging on the receiving plane of rear optical system, the optical signal received is converted into the signal of telecommunication by signal receiving processing system, and carry out corresponding signal processing, give display output.
Front optical system is made up of principal reflection mirror 12 and secondary mirror 13, the centre of principal reflection mirror is provided with an opening, opening size, more than from the directional light size of secondary reflection 13 outgoing, does not stop that parallel light emergence, the focus of principal reflection mirror 12 overlap with the focal position of secondary mirror 13；Principal reflection mirror 12 receives the light sent from testee, and reflects light and assemble, and assembles the focus that the direction of propagation is principal reflection mirror 12 of light；
Principal reflection mirror 12 is concave surface secondary rotating paraboloidal mirror, and principal reflection mirror 12 surface scribbles reflective foil layer, is gone out by incident luminous reflectance；Secondary mirror 13 receives the light that principal reflection mirror reflection is assembled, and to light line reflection, forms the directional light middle opening outgoing from principal reflection mirror 12, form the directional light less than incident beam bore.Secondary mirror 13 is between the focus of principal reflection mirror 12 and principal reflection mirror 12, and the focus of principal reflection mirror 12 overlaps with the focal position of secondary mirror 13；Secondary mirror 13 is convex surface secondary rotating paraboloidal mirror, and secondary mirror 13 surface scribbles reflective foil layer, is gone out by incident luminous reflectance；The directional light of secondary mirror 13 outgoing enters monochromator 14, through the light splitting effect of monochromator 14, forms the emergent light of four service aisles.
Monochromator 14 by organizing rotating filtering sheet and polariser forms more, polariser is arranged between front optical system and rotating filtering sheet, rotating filtering sheet is made up of the eyeglass being coated with arrowband film, rotating filtering sheet is arranged in the picture frame of accurately rotation, polariser is made up of the prism being coated with polarizing coating, outgoing beam is divided into the outgoing beam in two bundle different polarization directions, and rotating filtering sheet and polarizer surface all scribble reflective foil layer.
Rear optical system is made up of four battery of lens, including first battery of lens the 15, second battery of lens the 16, the 3rd battery of lens the 17, the 4th battery of lens 18, each battery of lens is made up of some lens, and the emergent light of a certain service aisle is converged to picture, and imaging surface is positioned on the back focal plane of these group lens.
The back focal plane often organizing lens is provided with corresponding ccd detector, the first ccd detector 19 it is provided with on the back focal plane of the first battery of lens 15, the second ccd detector 20 it is provided with on the back focal plane of the second battery of lens 16, it is provided with the 3rd ccd detector 21 on the back focal plane of the 3rd battery of lens 17, it is provided with the 4th ccd detector 22 on the back focal plane of the 4th battery of lens 18, it is used for receiving the light energy on focal plane, and converts optical signals into the signal of telecommunication；Each ccd detector is connected with signal processor, carries out processing conversion to the signal of telecommunication of CCD output, obtains one-dimensional spectral information and the two-dimensional space information of object, and exports and show to display.
In actual application, port number and the measure spectrum scope of wherein monochromator can be changed according to the kind of the greenhouse gases paid close attention to flexibly, utilize an instrument to realize the measurement analysis of most of greenhouse gases, there is higher cost performance.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing from the spirit or essential characteristics of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim included in the present invention.Should not be considered as limiting involved claim by any reference in claim.
Claims (5)
1. a greenhouse gases analyser based on rotating filtering sheet monochromator, including front optical system, monochromator, rear optical system, signal receiving processing system, display, described monochromator is arranged between front optical system and rear optical system, it is characterized in that, described front optical system is made up of principal reflection mirror and secondary mirror, the centre of described principal reflection mirror is provided with an opening, and the focus of described principal reflection mirror overlaps with the focal position of secondary mirror；
Described rear optical system is made up of four groups of lens, and often group lens are made up of some lens, and on a certain passage of the monochromator that lens are arranged on correspondence, the light of monochromator outgoing can coalescence be imaged on the focal plane of rear optical system；
Described signal receiving processing system is made up of ccd detector and signal processor, and described ccd detector receiving plane is positioned at the position of focal plane of rear optical system.
Greenhouse gases analyser based on rotating filtering sheet monochromator the most according to claim 1, it is characterised in that the opening size of described principal reflection mirror is more than the outgoing directional light size of secondary mirror reflection.
Greenhouse gases analyser based on rotating filtering sheet monochromator the most according to claim 1, it is characterised in that described signal processor is connected with ccd detector, described signal processor connects display.
Greenhouse gases analyser based on rotating filtering sheet monochromator the most according to claim 1, it is characterised in that described principal reflection mirror is concave surface secondary rotating paraboloidal mirror, described secondary mirror is convex surface secondary rotating paraboloidal mirror.
Greenhouse gases analyser based on rotating filtering sheet monochromator the most according to claim 1, it is characterised in that described principal reflection mirror and secondary mirror surface all scribble reflective foil layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610355782.XA CN105866046A (en) | 2016-05-26 | 2016-05-26 | Rotary light filter monochromator based greenhouse gas analyzer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610355782.XA CN105866046A (en) | 2016-05-26 | 2016-05-26 | Rotary light filter monochromator based greenhouse gas analyzer |
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| CN105866046A true CN105866046A (en) | 2016-08-17 |
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| CN201610355782.XA Pending CN105866046A (en) | 2016-05-26 | 2016-05-26 | Rotary light filter monochromator based greenhouse gas analyzer |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4776696A (en) * | 1987-03-20 | 1988-10-11 | Michael C. Hettrick | Optical system for high resolution spectrometer/monochromator |
| WO2004082174A1 (en) * | 2003-03-11 | 2004-09-23 | Cidra Corporation | Optical spectrum analyzer |
| CN1752739A (en) * | 2005-10-21 | 2006-03-29 | 中国科学院上海光学精密机械研究所 | Spectrophotometer for quickly measuring spectrum |
| CN101793559A (en) * | 2010-03-18 | 2010-08-04 | 西安交通大学 | Light and small interference imaging spectrum full-polarized detection device |
| CN105043542A (en) * | 2015-08-05 | 2015-11-11 | 中国电子科技集团公司第四十一研究所 | Continuous adjustable monochromatic output device based on gradual change optical filter |
| CN105258796A (en) * | 2015-10-13 | 2016-01-20 | 西安应用光学研究所 | Co-optical-path miniature multispectral imaging system |
| CN205786289U (en) * | 2016-05-26 | 2016-12-07 | 上海新产业光电技术有限公司 | A kind of greenhouse gases analyser based on rotating filtering sheet monochromator |
-
2016
- 2016-05-26 CN CN201610355782.XA patent/CN105866046A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4776696A (en) * | 1987-03-20 | 1988-10-11 | Michael C. Hettrick | Optical system for high resolution spectrometer/monochromator |
| WO2004082174A1 (en) * | 2003-03-11 | 2004-09-23 | Cidra Corporation | Optical spectrum analyzer |
| CN1752739A (en) * | 2005-10-21 | 2006-03-29 | 中国科学院上海光学精密机械研究所 | Spectrophotometer for quickly measuring spectrum |
| CN101793559A (en) * | 2010-03-18 | 2010-08-04 | 西安交通大学 | Light and small interference imaging spectrum full-polarized detection device |
| CN105043542A (en) * | 2015-08-05 | 2015-11-11 | 中国电子科技集团公司第四十一研究所 | Continuous adjustable monochromatic output device based on gradual change optical filter |
| CN105258796A (en) * | 2015-10-13 | 2016-01-20 | 西安应用光学研究所 | Co-optical-path miniature multispectral imaging system |
| CN205786289U (en) * | 2016-05-26 | 2016-12-07 | 上海新产业光电技术有限公司 | A kind of greenhouse gases analyser based on rotating filtering sheet monochromator |
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Inventor after: Miao Tongqun Inventor after: Zhang Shengrong Inventor before: Miao Tongqun Inventor before: Zhang Shengrong Inventor before: Wu Zhijun Inventor before: Wang Zhizhou Inventor before: Liu Baoxing |